Assuming that you want to define the value of pi as macros (M_PI), here are some steps that you can follow and achieve the same.
- Use the Define storage class: This allows you to generate #define statements in your code. For more information, see: https://www.mathworks.com/help/ecoder/ug/macro-definitions-define.html
- Use the Custom Code in Simulink Coder: You can declare macros as custom code using Custom Code settings. Learn more here: https://www.mathworks.com/help/simulink/ug/specify-configure-custom-c-code.html
I trust that this resolves the issue. If not , please share reproduction steps with dummy model data.
